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Plugin call External REST API - SSL/TSL could not create channel issue

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Posted on by Vasanthkumar

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Hi All,

I have a task to call the external REST API to get data from thirt party application.

In that, i have created a C# Console application for tried this and it is working fine and i can get the data from thirt party application via REST API.

The same code used to tried in Dynamics Custom workflow\Plugin, i have got a error below. Please give your valubale suggestion on this.

"System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel."

Note: The below options are tried but no luck.

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(AlwaysGoodCertificate);
ServicePointManager.Expect100Continue = true;

Thanks,
Vasanth

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Vasanthkumar 120 on at

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Hi All,

I have a task to call the external REST API to get data from thirt party application.

In that, i have created a C# Console application for tried this and it is working fine and i can get the data from thirty party application via REST API.

The same code used to tried in Dynamics Custom workflow\Plugin, i have got a error below. Please give your valuable suggestion on this.

"System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel."

Note: The below options are tried but no luck.

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;

ServicePointManager.ServerCertificateValidationCallback += new RemoteCertificateValidationCallback(AlwaysGoodCertificate);

ServicePointManager.Expect100Continue = true;

Thanks,
Vasanth

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AriaConsulting 2 on at

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Pretty sure one of the folks that knows a lot more about Dev than I do will correctly me, but I believe you have to use an OData connection on the D365 side.

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Community Member on at

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Hi,

Can you tell me what app you are using?

Regards,

Leah Ju

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Wahaj Rashid 11,321 on at

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Hi,

Thank you for your query.

This 3rd-party service you are trying to call is access by IP or a named URL?

Please note accessing a resource using IP is not supported for the online versions, for example:

https://101.0.1.97/api/sample/get is not supported.

https://apis.samplecompany.com/get is supported.

Secondly, make sure this 3rd part service is secured using HTTPS protocol and a valid certificate.

For your reference, here is a sample:

PowerApps-Samples/cds/orgsvc/C#/WebAccessPlugin at master · microsoft/PowerApps-Samples · GitHub

For further help, please share the sample code you are using.

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Vasanthkumar 120 on at

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Hi Wahaj,

Thanks for your response.

As you mentioned, i am using api url only not IP address. Also i have checked Third party end and they have confirmed that they dont have any certification and also they have used protocol 1.2

App url :https://xxxxxx.onbmc.com/.../login

Please refer below sample code for your reference

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://xxxxxxxx.onbmc.com/.../login");

request.Method = "POST";

request.UseDefaultCredentials = false;

request.ContentType = "application/x-www-form-urlencoded";

request.Timeout = 200000;

List<KeyValuePair<string, string>> allIputParams = new List<KeyValuePair<string, string>>();

allIputParams.Add(new KeyValuePair<string, string>("username", "xxxxxx"));

allIputParams.Add(new KeyValuePair<string, string>("password", "xxxxxxx"));

var formUrlEncodedContent = new FormUrlEncodedContent(allIputParams);

var urlEncodedString = formUrlEncodedContent.ReadAsStringAsync().Result;

using (var streamWriter = new StreamWriter(request.GetRequestStream()))

{

streamWriter.Write(urlEncodedString);

}

request.ServicePoint.Expect100Continue = true;

HttpWebResponse httpResponse = (HttpWebResponse)(request.GetResponse());

StreamReader reader = new StreamReader(httpResponse.GetResponseStream());

var token = reader.ReadToEnd();

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